Yealink SIP-T40G User Manual

Maintaining Your Phone
233
Resetting to Factory Settings
Generally, some common issues may occur while using the IP phone. Your system administrator
may ask you to reset your phone to factory configurations after you have tried all
troubleshooting suggestions but still do not solve the problem. This operation will delete all
your personal configuration settings, and reset all settings to the manufacturer default setting.
Check with your system administrator if the personalized settings are kept before resetting your
phone to factory settings.
Procedure:
1. Navigate to Menu->Advanced (default password: admin) ->Reset Config.
On the SIP-T42S/T41S/T40G/T40P IP phone, navigate to Menu->Settings->Advanced
Settings (default password: admin)->Reset Config.
2. Highlight the Reset to factory settings, and then press Reset.
A message is displayed on the LCD screen:
3. Press OK.
The phone begins resetting.
You can also long press the OK key when the phone is idle.
After reset, the LCD screen prompts “Welcome Initializing…Please wait”.
The phone will be reset sucessfully after startup.
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Yealink SIP-T40G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Wi-Fi	No
Security algorithms	AES, HTTPS, SSL/TLS
Networking standards	IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP, TFTP, HTTP, HTTPS
Voice codecs	G.711, G.711a, G.711u, G.722, G.726, G.729ab
RJ-11 ports quantity	1
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.6 W
Certification	CE, FCC, ISO 9001
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 90 %
Volume control	Digital
Display diagonal	2.3 \
Display resolution	132 x 64 pixels
Lines quantity	3 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	175 mm
Width	212 mm
Height	54 mm